Alert archive / Virginia / Frost Advisories in 2020
Frost Advisory 2, NWS Wakefield, VA
NWS Wakefield, VA issued this frost advisory at Apr 16, 2020, 3:12 PM EDT for 39 counties in Virginia; 8 counties in North Carolina; Worcester County, Maryland. It took effect at Apr 17, 2020, 2:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 2020, 3:12 PM EDT (19:12 UTC)
- In effect from
- Apr 17, 2020, 2:00 AM EDT
- Expired
- Apr 17, 2020, 9:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Wakefield, VA
All 48 counties
Worcester County, MD, Bertie County, NC, Camden County, NC, Chowan County, NC, Gates County, NC, Hertford County, NC, Northampton County, NC, Pasquotank County, NC, Perquimans County, NC, Accomack County, VA, Amelia County, VA, Brunswick County, VA, Charles City County, VA, Chesterfield County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, VA, City of Newport News, VA, City of Petersburg, VA, City of Poquoson, VA, City of Richmond, VA, City of Williamsburg, VA, Cumberland County, VA, Dinwiddie County, VA, Gloucester County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, James City County, VA, Lancaster County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, York County, VA
The radar
The Norfolk radar (KAKQ), 12 km from the middle of the area, began a volume at 19:10 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.2 hours before the alert went out and 210 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1627 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- -49 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Wakefield, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 3:00 AM EDT | Freeze Watch | AKQ | Caroline, Fluvanna, Goochland, Hanover, Louisa | 12 hr |
| Apr 16, 3:12 PM EDT | Freeze Warning | AKQ | Caroline, Essex, Fluvanna, Goochland, Hanover, King and Queen and 4 more | 18 hr |
Nearby
Frost Advisories in Virginia, 2020Frost Advisories in North Carolina, 2020Frost Advisories in Maryland, 2020Every frost advisory in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.